Question: Who is the discoverer of californium whose birthyear is 1912-3-9 ?
Paraphrase: Who is the pioneer of californium whose birthyear is 1912-3-9 ?
SPARQL (Wikidata): SELECT ?answer WHERE { wd:Q1888 wdt:P61 ?answer . ?answer wdt:P569 ?x FILTER(contains(YEAR(?x),'1912'))}
Answer: Glenn Seaborg, Stanley Gerald Thompson